A study on operation efficiency evaluation based on firm's financial index and benchmark selection: take China Unicom as an example

2009 ◽  
Author(s):  
Zu-guang Wu ◽  
Zhan-jun Tian ◽  
Hui Liu ◽  
Rui Huang ◽  
Guo-hua Zhu
Keyword(s):  
Efficiency Evaluation ◽  
Operation Efficiency ◽  
Financial Index ◽  
China Unicom

scholarly journals OPERATION EFFICIENCY EVALUATION OF THE ELECTROTECHNICAL COMPLEX OF BRANCH POWER LINES

2020 ◽  
Vol 8 (3) ◽  
pp. 071-076
Author(s):  
S. V. Sidorov ◽  
◽  
I. S. Sukhachev ◽  
V. V. Sushkov ◽  
V. R. Antropova ◽  
...  
Keyword(s):  
Power Lines ◽  
Efficiency Evaluation ◽  
Operation Efficiency

Актуальность повышения эффективности организации и проведения ремонтно-восстановительных работ воздушных линий электропередачи при грозовых воздействиях связана с необходимостью повышения бесперебойности эксплуатации электротехнического комплекса отходящих линий. Для этого требуется решение задачи повышения эффективности технического обслуживания электротехнического комплекса отходящих линий путём внедрения средств диагностирования повреждений его элементов (переходом на обслуживание по техническому состоянию объекта). Критерием эффективности технического обслуживания может являться величина коэффициента готовности электротехнического комплекса. Получены временные зависимости коэффициента готовности и вероятностей нахождения электротехнического комплекса отходящих линий в каждом из рассмотренных состояний,что позволит принимать решения о технических мероприятиях, направленных на предотвращение материальных потерь в процессе эксплуатации воздушных линий электропередачи и потребителей электрической энергии, в том числе решения, связанные с мониторингом динамики риска, модернизацией электрооборудования, применением средств защиты от перенапряжений. Показано, что переход на обслуживание по техническому состоянию электротехнического комплекса отходящих линий с применением средств диагностирования повреждений позволит увеличить на 11.7% коэффициент готовности, вследствие повышения эффективности технического обслуживания.

scholarly journals Analysis of a Selected Transport System Opertion Efficiency With the Use of Semi-Markov Model / Efektywnościowa Analiza Jakości Działania Wybranego Systemu Transportowego Z Zastosowaniem Modelu Semi-Markowa

2015 ◽  
Vol 33 (1) ◽  
pp. 187-196
Author(s):  
Łukasz Muślewski ◽  
Michał Lewalski ◽  
Klaudiusz Migawa
Keyword(s):  
Quality Assurance ◽  
Transport System ◽  
Experimental Tests ◽  
Assessment Model ◽  
Transport Systems ◽  
Efficiency Evaluation ◽  
System Operation ◽  
Operation Efficiency ◽  
Using Data ◽  
Évaluation Qualitative

Abstract This study deals with the problems connected with quality assurance for transport systems operation. The research was performed using data from a real transport system. The concept of a system operation quality was defined on the basis of which a schematic assessment model was developed and a random process was described to be used for its evaluation. Qualitative states of a system operation reflecting value ranges of the obtained evaluations in given times were identified in result of the experimental tests performed as part of the research. A model of a system operation efficiency evaluation was developed for the analyzed technical objects with the use of semi-Markov theory.

scholarly journals Operation Efficiency Evaluation of the China-Europe Freight Train Based on Grey Cross-Efficiency DEA

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Jun Zhang ◽  
Jianpeng Chang ◽  
Ping Lin ◽  
Minzi Song ◽  
Yanqiu Gong
Keyword(s):  
Sustainable Development ◽  
Evaluation Model ◽  
Grey System Theory ◽  
Efficiency Evaluation ◽  
Freight Train ◽  
Operation Efficiency ◽  
Evaluation Indicator ◽  
Actual Operating ◽  
Evaluation Models ◽  
Actual Operation

The China-Europe Freight Train (CEFT) serves as an important carrier and platform for international economic cooperation and international trade circulation between China and Europe. Since it worked, its actual operation and development have been affected by many factors, but the level of its actual operating efficiency and the main affecting factors of CEFT have been difficult to find, which has severely limited its sustainable development. Therefore, this paper scientifically selected the operation efficiency evaluation indicator system of CEFT and combined grey system theory, cross-efficiency method, and DEA to construct a new DEA evaluation model based on grey cross-efficiency, which can not only overcome the problem of ignoring the relative importance ratings of the evaluation indicator in the general DEA evaluation model and the traditional cross-efficiency DEA evaluation model but also more accurately evaluate the actual operation efficiency of CEFT. At the same time, based on the actual operating data of CEFT from 2011 to 2018 and the above new evaluation models, the CEFT’s operation efficiency was evaluated and tested by examples, showing that on the one hand, the grey cross-efficiency DEA evaluation model can more accurately evaluate the actual operation efficiency of CEFT than other traditional evaluation models; on the other hand, it is found that the “overseas cities,” “operating lines,” and “entry-exit nodes” are currently the main factors that limit the actual operation efficiency of CEFT and indicating improvement direction for the future efficient and sustainable development of CEFT.

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